/**
* Connect to the zookeeper ensemble. This is an optional method that may be used to force a
* connect before any other requests are sent.
*/
public void connect() {
if (zkStateReader == null) {
synchronized (this) {
if (zkStateReader == null) {
ZkStateReader zk = null;
try {
zk = new ZkStateReader(zkHost, zkClientTimeout, zkConnectTimeout);
zk.createClusterStateWatchersAndUpdate();
zkStateReader = zk;
} catch (InterruptedException e) {
if (zk != null) zk.close();
Thread.currentThread().interrupt();
throw new ZooKeeperException(SolrException.ErrorCode.SERVER_ERROR, "", e);
} catch (KeeperException e) {
if (zk != null) zk.close();
throw new ZooKeeperException(SolrException.ErrorCode.SERVER_ERROR, "", e);
} catch (IOException e) {
if (zk != null) zk.close();
throw new ZooKeeperException(SolrException.ErrorCode.SERVER_ERROR, "", e);
} catch (TimeoutException e) {
if (zk != null) zk.close();
throw new ZooKeeperException(SolrException.ErrorCode.SERVER_ERROR, "", e);
} catch (Exception e) {
if (zk != null) zk.close();
// do not wrap because clients may be relying on the underlying exception being thrown
throw e;
}
}
}
}
}
private void closeZK() throws Exception {
if (zkClient != null) {
zkClient.close();
}
if (reader != null) {
reader.close();
}
zkServer.shutdown();
}
@Override
public void shutdown() {
if (zkStateReader != null) {
synchronized (this) {
if (zkStateReader != null) zkStateReader.close();
zkStateReader = null;
}
}
if (shutdownLBHttpSolrServer) {
lbServer.shutdown();
}
if (clientIsInternal && myClient != null) {
myClient.getConnectionManager().shutdown();
}
if (this.threadPool != null && !this.threadPool.isShutdown()) {
this.threadPool.shutdown();
}
}